Let tr/// support adverbs, implement some.
Let tr/// support adverbs, implement some.

Adverbs for tr/// work and are implemented as named
parameters for Str.trans, which obviously supports the
same ones. :squash and :delete are implemented decently (IMHO),
while :complement isn't at all at present.

laben/rakudo,labster/rakudo,ugexe/rakudo,samcv/rakudo,paultcochrane/rakudo,jonathanstowe/rakudo,labster/rakudo,niner/rakudo,samcv/rakudo,dankogai/rakudo,skids/rakudo,raydiak/rakudo,salortiz/rakudo,ungrim97/rakudo,b2gills/rakudo,cognominal/rakudo,dankogai/rakudo,LLFourn/rakudo,Gnouc/rakudo,nbrown/rakudo,rakudo/rakudo,sergot/rakudo,nbrown/rakudo,dankogai/rakudo,LLFourn/rakudo,cygx/rakudo,ungrim97/rakudo,tony-o/rakudo,cygx/rakudo,softmoth/rakudo,raydiak/rakudo,azawawi/rakudo,tbrowder/rakudo,azawawi/rakudo,nunorc/rakudo,zostay/rakudo,LLFourn/rakudo,usev6/rakudo,Gnouc/rakudo,dankogai/rakudo,ab5tract/rakudo,rakudo/rakudo,cognominal/rakudo,MasterDuke17/rakudo,tony-o/rakudo,Gnouc/rakudo,laben/rakudo,tony-o/rakudo,cognominal/rakudo,ab5tract/rakudo,zostay/rakudo,awwaiid/rakudo,awwaiid/rakudo,laben/rakudo,cygx/rakudo,skids/rakudo,zhuomingliang/rakudo,ab5tract/rakudo,sjn/rakudo,raydiak/rakudo,awwaiid/rakudo,salortiz/rakudo,MasterDuke17/rakudo,usev6/rakudo,skids/rakudo,rakudo/rakudo,labster/rakudo,usev6/rakudo,sjn/rakudo,labster/rakudo,Leont/rakudo,MasterDuke17/rakudo,rakudo/rakudo,ab5tract/rakudo,MasterDuke17/rakudo,tony-o/rakudo,paultcochrane/rakudo,lucasbuchala/rakudo,skids/rakudo,ugexe/rakudo,labster/rakudo,softmoth/rakudo,b2gills/rakudo,jonathanstowe/rakudo,salortiz/rakudo,sergot/rakudo,rakudo/rakudo,lucasbuchala/rakudo,usev6/rakudo,softmoth/rakudo,ungrim97/rakudo,sjn/rakudo,cognominal/rakudo,Gnouc/rakudo,ugexe/rakudo,cognominal/rakudo,LLFourn/rakudo,nbrown/rakudo,zhuomingliang/rakudo,MasterDuke17/rakudo,laben/rakudo,b2gills/rakudo,azawawi/rakudo,ugexe/rakudo,paultcochrane/rakudo,lucasbuchala/rakudo,tbrowder/rakudo,lucasbuchala/rakudo,niner/rakudo,azawawi/rakudo,skids/rakudo,nunorc/rakudo,raydiak/rakudo,zostay/rakudo,Gnouc/rakudo,ungrim97/rakudo,softmoth/rakudo,ugexe/rakudo,lucasbuchala/rakudo,salortiz/rakudo,Leont/rakudo,Leont/rakudo,salortiz/rakudo,dankogai/rakudo,niner/rakudo,samcv/rakudo,Gnouc/rakudo,zostay/rakudo,paultcochrane/rakudo,Leont/rakudo,nbrown/rakudo,nbrown/rakudo,tbrowder/rakudo,softmoth/rakudo,samcv/rakudo,azawawi/rakudo,tony-o/rakudo,labster/rakudo,jonathanstowe/rakudo,tbrowder/rakudo,zhuomingliang/rakudo,nunorc/rakudo,tony-o/rakudo,samcv/rakudo,MasterDuke17/rakudo,LLFourn/rakudo,ab5tract/rakudo,niner/rakudo,salortiz/rakudo,rakudo/rakudo,nunorc/rakudo,sergot/rakudo,b2gills/rakudo,sjn/rakudo,cygx/rakudo,awwaiid/rakudo,jonathanstowe/rakudo,tbrowder/rakudo,awwaiid/rakudo,zhuomingliang/rakudo,b2gills/rakudo,jonathanstowe/rakudo,paultcochrane/rakudo,sjn/rakudo,usev6/rakudo,cygx/rakudo,sergot/rakudo,ungrim97/rakudo,tbrowder/rakudo,nbrown/rakudo